John a



(No Model J. A. HOLMBERG & M. J. GOSGRIPP.

INJEGTI-NG HOSE NpzzLE.

No. 580,109. Patented Apr. 6, 1897.

*nf/zzn e s s es x Invenam' ivy/67mm UNITED STATES PATENT OFFICE.

JOHN A. HOLMBERG AND MICHAEL J. COSGRIFF, OF KANSAS CITY, MISSOURI; SAIDCOSGRIFF ASSIGNOR TO SAID HOLMBERG.

INJECTING HOSE-NOZZLE.

SPECIFICATION forming part of Letters Patent No. 580,109, dated April 6,1897.

Application led August 31, 1895. Serial No. 561,166. (No model.)

To @ZZ whom, t may concern.-

Be it known that we, JOHN A. HOLMBERG. and MICHAEL J. CosGEIFF, ofKansas City, Jackson county, Missouri, have invented certain new anduseful Improvements in Injecting Hose-Nozzles, of which the following isa full, clear, and exact description, reference being had to theaccompanying drawings, forming a part hereof.

Our invention relates to injecting hosenozzles; and it consists incertain novel and peculiar features of construction and arrangement,hereinafter to be particularly described and claimed.

The object of the invention is to produce a hose-nozzle whereby thepower of the pumping-engine can be utilized by injector or suctionaction to increase in a large degree the pressure of water leaving thewater-main via the usual water or fire plugs.

In order that the invention may be fully understood, we will proceed todescribe it With reference to the accompanying drawings, in which-Figure l represents, partly in section and partly in elevation,ahose-nozzle embodying our invention. Fig. 2 represents a View of thereceiving end of the same. Fig. 3 represents a cross-section on the line3 3 of Fig. l. Fig. 4. represents a cross-section on the line 4 4 ofFig. l. Fig. represents one of the sub or concentrating nozzles inelevation.

Referring to the drawings, l designates the tubular nozzle proper, whichpreferably gradually diminishes diametrically from its receiving or rearend to its delivery or front end. At its rear or receiving end it isinternally iiared and externally is screw-threaded, as shown at 2.

3 designates the concentrating-chamber, which, in section, isapproximately V-shaped, tapering at its front end to circular form,where its internal threads 4. are engaged by the external threads of thetubular nozzle proper. In cross-section said concentratingchamber isapproximately elliptical in form, as shown most clearly in Fig. 4 At itsrear or receiving end it is provided with tubular diverging extensionsthat form passages 5,which each communicate with said chamber 3, andsaid tubular extensions are externally screwthreaded, as shown at 6.Midway between said extensions and in direct longitudinal alinement withthe nozzle l .said chamber is provided with the threaded opening 7.Arranged axially within the front end of the chamber 3 and projectingforwardly into the rear or receiving end of the tube l is a sub orconcentrating nozzle 8. Arranged to the rear of said nozzle and projectinginto the rear end of the same is a similar or concentrating nozzle9. Said nozzles are of such diameter that an annular space is formedbetween them and the chamber-Wall, and they are supported rigidly insuch position by means of the cross-bars l0, which radiate from and arecast integrally with said sub or concentrating nozzle and also with theconcentrating-chamber wall. Said nozzles are frustumshaped and taperforwardly, the rear end of the front one S overlapping the front end ot'the rear one 9, and the arrangement is such than an annular space isformed between such overlapping portions that the water, as hereinafterdescribed, may have free access to the nozzle 8, both internally andexternally of the nozzle 9. In order to afford as little resistance tothe free and uninterrupted passage of the water as possible, the rear orreceiving ends of said nozzles are beveled to points, as shown at 8 and9, respectively. For the same reason the supporting-arms l0 are V-shapedin cross-seetion,with their apices presented rearwardly or toward thewatersupply.

ll designates a fourth nozzle. This nozzle is externally threaded, asshown at l2, and engages the internal thread 7. It tapers from suchpoint to its front end, which is diametrically smaller than and projectsconcentrically within the rear end of the nozzle 9.

The nozzle ll at its outer end is also externally threaded, as shown at13, and is coupled to a hose-pipe 14, leading to a pumping-engine orother apparatus (not shown) adapted to Work at ahigh pressure.Otherhose-sections l5 are coupled to the extensions 5 of the chamber 3and at their opposite ends are connected to Water or fire plugs in thecustomary manner. The pressure ot' water through said plugs is of coursegreatly inferior to the pressure generated by the engine, that thestream IOO of water passing into the nozzle by way of the hose-section14 and its nozzle 11 may exhaust all of the air from said chamber, andthereby tend to siphon or dravsT the water by suction action through thehose-sections l5 from the plugs at a much more rapid rate than wouldflow from the pressure in the water-main, thus obtaining a large volumeor stream of Water, which is discharged from the nozzle proper, 1, to agreat distance. In practice the pressure through said pipes with thisapparatus Vis 4so augmented that the Water from the mains at acomparatively low pressure can be thrown upon the highest buildin gs,provided the pressure through the section 14 is suiiicient. By arrangingthe sub-nozzles as shown the hosesection Mis provided with what in allrespects is an extended nozzle, which confines the stream passingthrough said section to its proper course until it enters the nozzleproper, and at the same time permits said stream to be augmented involume without interrupting Yits ow by the streams entering the chamberat opposite sides by way of the hose-sections 15 'and entering theextension-nozzles 9 and 8, as Will be readily understood. The stream isfurther augmented by the water Whichrpasses externally of said nozzleeXtensions 8 and 9 and enters directly the nozzle proper, 1.

From the foregoing it will be apparent that a nozzle of this kind willbe found very useful and will possess great advantages overA others inview of the fact that Water from the mains can be discharged at a muchgreater pressure than that at which it is received, that tires may befought with greater success and at less cost, comparatively, than wherean engine must be connected to each line of hose and a small streamprojected at a-high pressure. In other words, a tire-department providedwith a number of the. nozzles may use fewer engines than would otherwisebe necessary.

Thile we have shown only a pair of hosesections 15 communicating withthe chamber 3, it is to be understood that the number of said pipes maybe varied. From the description it is apparent that We have produced ahose-nozzle which is comparatively inexpensive and simple, strong, anddurable of construction.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

A hosen0zzle, con sistin g of the tubular nozzle 1, the tapering chamber3, communicating at its contracted end with said nozzle, and providedwith a plural number of inlet-pas sages at its opposite end, one beingarranged in axial alinement withthe nozzle 1, a hosepipe communicatingAwith said last-named opening, and adapted to discharge Water un@ dergreat pressure through said nozzle, hosepipes coupledv to the otherinlet-openings of said chamber, and one or more conical subnozzlesarranged in longitudinal alinement

